Sealed filling cap for fuel storage tanks



Jan. 13, 1953 NT ETAL 2,625,272

SEALED FILLiNG CAP FOR FUEL STORAGE TANKS Filed Aug. 25, 1950 INVENTORSmaize mm a HRVINTZ NQTHHN H. ARVINS BY ROBERT A. HRVINTZ ATTORNEPatented Jan. 13, 1953 SEALED FILLING CAP FOR FUEL STORAGE TANKS AbrahamA. Arvintz and Nathan A. Arvins, Brooklyn, and Robert A. Arvintz, NewYork, N. Y., assignors to Sanicom Company, Inc, Brooklyn, N. Y., acorporation of New'Yorl-z Application August 25, 1950, Serial No.181,544

9 Claims.

This invention relates to filling caps usually countersunk into apavement of a filling station or the like for use in transferring fuelfrom a supply vehicle to tanks submerged in the ground under thepavement. More particularly, the invention deals with a filling cap ofthe character described having means for quickly removing the coverplate and to incorporate on the plate a seal valve member to provide adual seal or closure substantially eliminating entrance of water intothe filter chamber of the device.

The novel features of the invention will be best understood from thefollowing description, when taken together with the accompanyingdrawing, which drawing is a sectional view through a filling cap devicemade according to our invention.

In the drawing, I represents the casing of the device which is embeddedinto a pavement or other supporting surface 2, so that the outerperipheral edge 3 of the casing is flush with the pavement. The casinghas a large lower filter chamber 4, with a side outlet 5, with which apipe couples for transferring filtered fuel to the receivin tank, notshown.

Above the chamber 4, the casing has an enlarged inlet chamber 6,sub-divided from the chamber 4 by an inwardly extending annular flangeportion 1, to which is secured the outwardly extending flange 8 of avalve casing 9. The primary casing I has a passage Ill communicatingwith the chamber 6 for venting said chamber and for drainage, ifdesired.

The valve casing 9 has a lower bevelled valve seat I I, upon which atapered disc valvev I2 is adapted to seat. The valve I2 carries a spacedannular ring I3, spaced from the valve by a series of opposed, webs M,two opposed webs I4 having vertical apertures I5, in which guide pins I6 secured to the casing 9 operate. The pins I6 also check inwardmovement of the valve I2. The bore of the valve casing 9 is threaded, asseen at H, to receive a suitable fitting on the end of a supply pipe sothat, when the filling cap is open, as later described, this coupling,as it is screwed into the casing 9, moves the valve I2 down into openedposition, as indicated in dot and dash lines. The valve I2 has. adepending stem I8 which operates in a raised bearing IS on the bottom.of the. casing I and againstv a spring 20 disposed in said hearing. Thespring 20 is tensioned to normally maintain the valve I2 in seatedposition. a

At 2| is shown a closure plate which seats in a groove portion 22 of thecasing I', as shown. The

(Cl. 210-1G6) 2. plate 2|, has, centrally thereof, a socket 23 for thereception of a suitable wrench. Below the socket 2,3 is a bearing 24 inwhich a pin 25 is slidably' and rotatably mounted. The pin 25 has along, annular recessedv portion 26 engaged by one or more screws 21 toretain, the. pin 25' against displacement from the bearing 24'. whilepermitting free, rotary and. sliding movement therein. The lower end ofthe pin 25 carries a, supplemental seal cr valve plate 28 which seatsupon the upper surface, of the valve casing 9.. as seen at 29, so as to.effect. a, seal between the chamber 6, and the interior of the casing 9above the valve I2. This provides. a dual sealcontrolling communicationsbetween the chamber i5 and the chamber 4.

At. one side of the closure plate. ZI is a'bayonet slot enlargement 30,part. of the slot of which is indicated at 3|. This slot is adapted to.engage a pin 32 in the casing I todraw the plate. 2! into sealedposition, thus effecting a primary seal to the casing 6.

Seating snugly in the bore 1 of the flange l is the upper ring portion33 of a cup-shaped strainer 34 disposed in the chamber 4 in spacedrelation to the walls of the casin I in the manner illustrated. Thebottom of the strainer 3 has an upwardly pressed member 35 terminatingin a ring opening 36 to fit snugly, but freely, around the valve stemId. The ring 35 is adapted, to seat upon the bearing I9, thus positioning the strainer within the casing. With this construction, it willappear that a large strainer area is provided for efficient operation ofthe. device without, danger of retarding flow of the. fuel outwardlythrough t e discharge From time to time. the casing 9 can be removed forcleaning the strainer or for replacement. of the strainer, wheneverdesired. Itwill, be. understood from the foregoing that, when the cap 21is removed, the seal or valve, plate 28 is removed with the cap, thus:immediately giving access to. the threaded bore of the valve casing t.

A spring 31 is provided between the. bottom of the seal or valve plate28 and the bearing 24 to tensionally seat the member 28 as and when theplate 2.5 is in position. For this reason, move" ment of the pin 25 inthe bearing 24 is provided.

Having fully described our invention, what we claim as new and desire tosecure by Letters Patout is:

' 1,. A filling device of the-class described, com prising a casing;partitioned to form anupper inlet chamber and a lower strainer chamber,a detachable cover plate controlling admission to the inlet chamber, thelower part of the casing having an outlet for discharge of fluid passedthrough the device, a valve casing and a valve forming the partitionbetween said chambers, tensional means for normally seating the valve onthe valve casing to close communication between said chambers, a valveplate yieldably supported on the cover plate and yieldably engaging thevalve casing to form a secondary seal between said chambers, a largecup-shaped strainer supported in the casing and arranged within thestrainer chamber in spaced relation to the side and bottom wallsthereof, the lower part of the casing having a bearing portion extendinginto the casing, the valve having a stem operating in said bearingportion, and a spring in the bearing portion engaging the stem tosupport the valve in seated position.

2. A filling device of the class described, comprising a casingpartitioned to form an upper inlet chamber and a lower strainer chamber,a detachable cover plate controlling admission to the inlet chamber, thelower part of the casing having an outlet for discharge of fluid passedthrough the device, a valve casing and a valve forming the partitionbetween said chambers, tensional means for normally seating the valve onthe valve casing to close communication between said chambers, a valveplate yieldably supported on the cover plate and yieldably engaging thevalve casing to form a secondary seal between said chambers, a largecup-shaped strainer supported in the casing and arranged within thestrainer chamber in spaced relation to the side and bottom wallsthereof, the lower part of the casing having a bearing portion extendinginto the casing, the valve having a stem operating in said bearingportion, a spring in the bearing portion engaging the stem to supportthe valve in seated position, and the bottom of the strainer having araised portion seating on said bearing.

3. A filling device of the class described, comprising a casingpartitioned to form an upper inlet chamber and a lower strainer chamber,a detachable cover plate controlling admission to the inlet chamber, thelower part of the casing having an outlet for discharge of fluid passedthrough the device, a valve casing and a valve forming the partitionbetween said chambers, tensicnal means for normally seating the valve onthe valve casing to close communication between said chamhers, a valveplate yieldably supported on the cover plate and yieldably engaging thevalve casmg to form secondary Seal between Sam cham- 7 upper end of thetubular portion being internally bers, a large cup-shaped strainersupported in the casing and arranged within the strainer chamber inspaced relation to the side and bottom walls thereof, the lower part ofthe casing having a bearing portion extending into the casing, the valvehaving a stem operating in said bearing portion, a spring in the bearingportion engaging the stem to support the valve in seated position, thebottom of the strainer having a raised portion seating on said bearing,the partition portion of the casing being partially formed by aninwardly extending annular flange, and the upper end of the strainerhaving a ring seating in said flange.

4. A device of the character described, comprising a substantiallycup-shaped main casing,

lar portion with a valve seat at its lower end, the upper end of thetubular portion being internally threaded, a valve, said valve having astem operating in a bearing in the bottom of the main casing, a springin said bearing engaging the stem to normally support the valve on saidvalve seat, said valve having a ring normally arranged within the upperthreaded portion of the valve casing and spaced from the valve by aplurality of webs, means on the valve casing engaging webs of the valvefor keying the valve against rotation, a cover plate detachably coupledwith the upper end of the main casing for closing the inlet chamber, anda valve plate yieldably and movably supported on the closure plate andoperatively engaging the valve casing to form a secondary seal betweenthe upper and lower chambers of the main casing.

5. A device of the character described, comprising a substantiallycup-shaped main casing, the casing having, intermediate its ends, aninwardly projecting annular flange partially partitioning the casing toform an upper inlet chamher and a lower strainer chamber, a valve casingmounted on said flange and extending into the lower chamber, said valvecasing having a tubular portion with a valve seat at its lower end, theupper end of the tubular portion being internally threaded, a valve,said valve having a stem operating in a bearing in the bottom of themain casing, a spring in said bearing engaging the stem to normallysupport the valve on said valve seat, said valve having a ring normallyarranged within the upper threaded portion of the valve casing andspaced from the valve by a plurality of webs, means on the valve casingengaging webs of the valve for keying the valve against rotation, acover plate detachably coupled with the upper end of the main casing forclosing the inlet chamber, a valve plate yieldably and mcvably supportedon the closure plate and operatively engaging the valve casing to form asecondary seal between the upper and lower chambers of the main casing,and means retaining the valve plate against displacement from saidclosure plate.

6. A device of the character described, comprising a substantiallycup-shaped main casing, the casing having, intermediate its ends, aninwardly projecting annular flange partially partitioning the casing toform an upper iniet chamber and a lower strainer chamber, a valve casingmounted on said flange and extending into the lower chamber, said valvecasing having a tubular portion with a valve seat at its lower end, the

threaded, a valve, said valve having a stem oper ating in a bearing inthe bottom of the casing, a spring in said bearing engaging the stem tonormally support the valve on said valve seat, said valve having a ringnormally arranged within the upper threaded portion of the valve casingand spaced from the valve by a plurality of webs, means on the valvecasing engaging webs; of the valve for keying the valve againstrotation, a cover plate detachably coupled with the upper end of themain casing for closing the inlet chamher, a valve plate yieldably andmovably supported on the closure plate and operatively engaging the-valve casing to form a secondary seal between the upper and lowerchambers of the main casing, means retaining the valve plate againstdisplacement from said closure plate, a cup-shaped strainer arranged inthe strainer chamber, said strainer seating on and partially encirclingsaid bearing, and the upper end of the strainer having a part fittingsnugly within the annular flange of said casing;

7. A device of the character described, comprising a substantiallycup-shaped main casing, the casing having, intermediate its ends, aninwardly projecting annular flange partially partitioning the casing toform an upper inlet chamber and a lower strainer chamber, a valve casingmounted on said flange and extending into the lower chamber, said valvecasing having a tubular portion with a valve seat at its lower end, theupper end of the tubular portion being internally threaded, a valve,said valve having a stem operating in a bearing in the bottom of themain casing, a spring in said bearing engaging the stem to normallysupport the valve on said valve seat, said valve having a ring normallyarranged within the upper threaded portion of the valve casing andspaced from the valve by a plurality of webs, means on the valve casingen gaging webs of the valve for keying the valve against rotation, acover plate detachably coupled with the upper end of the main casing forclosing the inlet chamber, a valve plate yieldably and movably supportedon the closure plate and operatively engaging the valve casing to form asecondary seal between the upper and lower;

chambers of the main casing, means retaining the valve plate againstdisplacement from said' closure plate, a cup-shaped strainer arranged inthe strainer chamber, said strainer seating on and partially encirclingsaid bearing, the upper end of the strainer having a part fitting snuglywithin the annular flange of said casing, and the tween "said chambers,said cover plate having a central bearing projecting into said inletchambar, a valve plate havin a projecting pin slidably mounted in saidbearing, means on the bearing checking movement of the pin in bothdirections, means between said bearing and valve plate for yieldablysupporting the cover plate in engagement with the valve casing to form asecondary seal between said chambers, and a large cupshaped strainersupported in the casing and arranged within the strainer chamber inspaced re lation to the side and bottom walls thereof.

9. In filling devices of the character described, comprising a casinghaving an upper inlet chamber and a lower strainer chamber, meanscomprising a valve closing communication between said chambers, a coverplate detachably coupled with the casing controlling admission to saidinlet chamber, said plate having a central bearing projecting into saidinlet chamber, a valve plate having a projecting pin slidably mounted insaid bearing, means on the bearing checking movement of the pin in bothdirections and retaining the valve plate in coupled relation with saidcover plate, a coil spring on said pin between the bearing and valveplate, said spring being adapted to tensionally support the valve platein engagement with the first named means in forming a secondary sealbetween the inlet and strainer chambers; the lower portion of the casinghaving a discharge communicating with said strainer chamber, and theside wall of the upper portion of the casing having a vent communicatingwith the inlet chamber.

ABRAHAM A. ARVINTZ. NATHAN A. ARVINS. ROBERT A. ARVINTZ.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,164,450 Eshbaugh et al July 4,1939 2,335,899 Arvintz Dec. '7, 1943

